Mitsubishi Grandis. Manual - part 559

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-334

disconnected.

(4) Continuity between C-09 joint connector (CAN2) 

terminal Nos. 7 and 18

OK: More than 2 

Ω

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54D-8

.

Q: Is the check result normal?

YES : 

<More than 2 

Ω> Go to Step 7.

NO : 

<2 

Ω or less> Repair the wiring harness 

between joint connector (CAN2) and the 
combination meter connector.

STEP 7. Resistance measurement at C-02 
combination meter connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

(1) Remove the combination meter, and measure at 

the equipment side.

(2) Resistance between C-02 combination meter 

connector terminal Nos. 23 and 24

OK: 120

± 20 Ω

Q: Is the check result normal?

YES : 

<Within 120

± 20 Ω> Follow diagnostic item 

18, Diagnose CAN bus lines thoroughly. 
Refer to 

P.54D-476

.

NO : 

<Not within 120

± 20 Ω> Replace the 

combination meter.

STEP 8. Connector check: C-106 A/C-ECU 
connector

CAUTION

The strand end of the twist wire should be within 
10 cm from the connector. For details refer to 

P.54D-8

.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

AC204740DD

Harness side: C-09

Test
harness

Test
harness

AC310613

BB

Connector: C-02 <LHD>

Harness side

AC204740

AC204740

AC204740

AC204740DS

Equipment side: C-02

Test
harness

AC310613

AB

Connector: C-106 <LHD>

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-335

STEP 9. Resistance measurement at C-09 joint 
connector (CAN2).

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54D-8

.

(1) Disconnect the joint connector (CAN2) and the 

A/C-ECU connector, and measure at the wiring 
harness side.

(2) Ignition switch: OFF (LOCK)

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54D-8

.

(3) Ensure that the negative battery terminal is 

disconnected.

(4) Continuity between C-09 joint connector (CAN2) 

terminal Nos. 2 and 13

OK: More than 2 

Ω

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54D-8

.

Q: Is the check result normal?

YES : 

<More than 2 

Ω> Go to Step 10.

NO : 

<2 

Ω or less> Repair the wiring harness 

between joint connector (CAN2) and the 
A/C-ECU connector.

STEP 10. Resistance measurement at C-106 
A/C-ECU connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

(1) Remove the A/C-ECU, and measure at the 

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310613

AB

Connector: C-106 <LHD>

Harness side

AC204740DE

Harness side: C-09

Test
harness

Test
harness

AC310613

AB

Connector: C-106 <LHD>

Harness side

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-336

equipment side.

(2) Resistance between C-106 A/C-ECU connector 

terminal Nos. 8 and 9

OK: 1 k

Ω or more

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Follow diagnostic item 18, 

Diagnose CAN bus lines thoroughly. Refer 
to 

P.54D-476

.

NO : 

<Less than 1 k

Ω> Replace the A/C-ECU.

STEP 11. Connector check: C-221 ETACS-ECU 
connector

CAUTION

The strand end of the twist wire should be within 
10 cm from the connector. For details refer to 

P.54D-8

.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the defective connector.

STEP 12. Resistance measurement at C-09 joint 
connector (CAN2).

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

CAUTION

The test wiring harness should be used. For 
details refer to 

P.54D-8

.

(1) Disconnect the joint connector (CAN2) and the 

ETACS-ECU connector, and measure at the 
wiring harness side.

(2) Ignition switch: OFF (LOCK)

CAUTION

When measuring the resistance, disconnect the 
negative battery terminal. For details refer to 

P.54D-8

.

(3) Ensure that the negative battery terminal is 

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740

AC204740DT

Equipment side: C-106

Test
harness

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-337

disconnected.

(4) Continuity between C-09 joint connector (CAN2) 

terminal Nos. 3 and 14

OK: More than 2 

Ω

CAUTION

Strictly observe the specified wiring harness 
repair procedure. For details refer to 

P.54D-8

.

Q: Is the check result normal?

YES : 

<More than 2 

Ω> Go to Step 13.

NO : 

<2 

Ω or less> Repair the wiring harness 

between joint connector (CAN2) and the 
ETACS-ECU connector.

STEP 13. Resistance measurement at C-221 
ETACS-ECU connector.

CAUTION

A digital multimeter should be used. For details 
refer to 

P.54D-8

.

(1) Remove the ETACS-ECU, and measure at the 

equipment side.

(2) Resistance between C-221 ETACS-ECU 

connector terminal Nos. 72 and 73

OK: 1 k

Ω or more

Q: Is the check result normal?

YES : 

<1 k

Ω or more> Follow diagnostic item 18, 

Diagnose CAN bus lines thoroughly. Refer 
to 

P.54D-476

.

NO : 

<Less than 1 k

Ω> Replace the 

ETACS-ECU.

AC204740DF

Harness side: C-09

Test
harness

Test
harness

AC310626

Connector: C-221

Junction block (Rear view)

<LHD>

AC

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

Harness side

C-221(GR)

AC204740

69

60

51

55

64

71

62

53

61

70

52

63

54

73

67

66

65

72

56 57

68

74

59

58

AC204740

AC204740

AC204740

AC204740

AC204740DU

Equipment side: C-221

Test
harness